微笑掩盖忧伤
[wēi xiào yăn gài yōu shāng]
The name 'A Smile Hides Sadness' poignantly encapsulates hiding one's true emotions behind a facade. Herein lies an acknowledgment of vulnerability and perhaps the societal pressure to appear happy regardless of internal strife; many users adopting this kind of name are processing deep-seated sorrow not readily visible on the surface.